Journal of Thermal Analysis and Calorimetry,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 26, 2024
Abstract
An
important
measure
that
shows
the
total
amount
of
greenhouse
gases
released
into
environment
is
carbon
footprint
by
using
fossil
fuels.
Sustainable
alternatives
are
seen
as
an
effective
step
in
both
preventing
depletion
fuels
and
combating
climate
change.
To
overcome
these
negative
consequences,
use
area
with
hydrogen
becoming
increasingly
popular
among
fuel
researchers.
However,
application
a
can
potentially
increase
NOx
emissions.
For
this
reason,
water–urea
solution
5%
volume
was
added
to
diesel–hydrogen
dual
engine.
Subsequently,
intake
manifold
supplied
1
LPM
hydrogen.
Different
engine
loads
were
evaluated,
while
diesel
operated
at
1500
rpm
rated
speed.
As
result,
addition
urea
led
decrease
BSFC
23%
improvement
thermal
efficiency
25%
compared
fuel.
Blend
oil
decreased
EGT
2%
lower
than
oil.
NOx,
CO,
HC
CO
2
concentrations
5,
61,
13
53%,
respectively,
when
mixed
about
Engine
performance
may
be
improved,
exhaust
pollutants
reduced
utilizing
combined
alternative
Applied Phycology,
Год журнала:
2025,
Номер
unknown, С. 1 - 22
Опубликована: Янв. 8, 2025
Natural
antioxidant
compounds
from
plants
can
contribute
to
pharmacological
activities
by
neutralizing
free
radicals.
Limited
research
has
explored
the
phytochemical
characteristics
of
filamentous
green
algae
and
their
properties.
In
this
study,
three
algal
species,
Oedogonium
angustistomum,
Ulothrix
variabilis
Mougeotia
pulchella
(Chlorophyceae),
were
isolated
freshwater
ecosystems
Kerala,
constituents,
total
phenol
flavonoid
contents
evaluated.
The
study
investigated
whether
sequential
extraction
with
solvents
varying
polarity,
such
as
petroleum
benzine,
acetone,
methanol,
water
methanol
crude
(70%
methanol),
would
affect
phenolic
algae.
Results
indicated
that
extracts
had
highest
yield
in
aqueous
Oedogonium,
while
benzine
fractions
yielded
lowest.
Preliminary
analysis
showed
presence
reducing
sugars,
flavonoids,
triterpenoids
acetone
extract,
which
contained
more
compounds.
There
higher
extracts,
except
for
Mougeotia,
extract
content.
differing
effects
on
activity
content
among
different
polarities.
promising
being
potent
free-radical
scavengers
DPPH,
nitric
oxide
hydroxyl
radicals,
respectively.
was
a
prominent
scavenger
superoxide
A
concentration-dependent
inhibition
oxide,
radicals
anion
observed
extracts.
studied
appear
contain
significant
amounts
antioxidants,
might
prevent
progression
various
oxidative
stresses
vitro.
To
be
considered
clinical
use
pharmaceutical
or
nutraceutical
industries,
must
assessed
vivo
activity.
Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 10, 2025
Rare
Earth
elements
(REEs)
are
known
as
the
“vitamins
of
chemistry”
have
widely
used
in
industries
including
aerospace,
marine
and
electronics.
Metals
ceramics
examples
existing
durable
materials
that
typically
hydrophilic
need
to
be
modified
with
other
become
hydrophobic.
This
research
paper
investigates
hydrophobic
potential
family
rare-earths,
which
belong
lanthanide
series.
The
distinct
electronic
structure
rare
earths
atoms
hinders
hydrogen
bonding
when
water
molecules
come
contact
composites.
results
a
hydration
structure,
wherein
surface
oxygen
serve
only
sites.
Moisture
can
speed
up
corrosion
process,
particularly
combined
impurities.
Water
has
ability
help
electrolytes
develop
accelerates
aluminum
corrosion.
Aluminum
corrodes
more
quickly
at
higher
temperatures.
Owing
their
physicochemical
characteristics,
earth
metals
attracted
lot
attention
improve
performance
When
Oxides
(REOs)
added
composite
materials,
hydrophobicity
is
greatly
increased.
because
passive
films
formed
microstructure
altered,
increases
materials’
resistance
Apart
from
these
fundamentals
hydrophobicity,
behaviour
challenges
also
discussed
this
paper.
